Cooling device for the exhaust-valves of explosion-engines.



0. DEUTSGH. COOLING DEVICE FOR THE EXHAUST VALVES 0F EXPLOSION ENGINES.

I p APPLICATION FILED DEC. 12, 1911. 1,043,076. Pdtented NOV. 5,1912

" 5 CHARLES nnu'rsori, on Animus, FRANCE.

f'JOOLING DEVICE FOR THE EXHAUST VALVES 01* EXPLOSION-ENGINES.

noaaoca Specification of Lettel's Patent.

Application filed December 12, 1911. Serial No. 665,344.

Patented News, 1912,

To all whom it may concern:

Be it known that I, CHARLES DEUTsoH, a subject of the King of Hungary, residing at Amiens,. Somme, France, have invented certain new and useful Improvements in Cooling Devices for Exhaust-Valves of Explosion-Engines, of which the following is a specification.

This invention relates to improvements. in the devices used, for cooling the exhaust valve of high power explosion engines by means of a continuous current of water.

The object of these improvements is to avoid the choking of the Water conduit by the scale deposited by the water. I The device comprises a pipe ora perforation made in the wall of the chamber situated below, or at the back of, 'the'exhaust valve. The pipe or the perforation establishes an open communication between the said chamber and either a water tank independent of the engine,-or the cooling water circulating in the engine jacket. The water, in passing through the pipe or the perforation, is converted into steam at the expense of the heat of the valve and its adjoining walls, and escapes therefromv at a great speed, thus constantly rinsing the walls of the conduit and carrying outside the scale which the water has the tendency to deposit thereon, since the steam in question becomes mixed, immediately on arrival in the valve chamber, with the hot exhaust gases escaping through the exhaustconduit.

A construction of the device according to this invention is illustrated by way of ex: ample in the accompanying drawing in; which-- Figure 1 is a longitudinal section showing a portion of the engine adjoining the exhaust valve and provided with the device in question, While Fig. 2 is a cross-section of ihe said portion.

in the construction illustrated, a pipe a forming a conduit for the cooling water,

" is fitted in an air tight manner in the-wall b of the chamber A of the valveyand is arranged below, or at the back of, the exhaust valve and in communication with the exhaust conduit B. The opening of the said .pipe, situated in the cooling jacket B of the remains engine, is closed by, the'point c of a screwthreade'd rod screwed intothe outer wall of the casing and terminatin outside ina hexagonal head d or a mille button. The

manipulation of the said'he'ad d or of the,

button enables the cross-section of the passage for the water escaping through the pipe at, to be regulated, and the quantity to be adjusted to the temperature of the chamber A and of the valve S,

The cooling water, in passing through the plpe a, is evaporated, acquires a great speed and thus carries away the scale that would have the tendency to be formed on the inner walls of the pipe at. The steam thus formed, becomes mixed with the hot gases escaping through the valve, and esca es and, constantly forces outward the sea e contained in the cooling water. I The water used for cooling the valve, instead of being taken from the water circulating in the casing R, could be obtained from a tank era source independent of the engine. -The exhaust valve S thus being constantly cooled, does not become deformed, perfectly air-tight, and leaking is avoided. r

What I claim as my invent-ion and desire to secure byiLetters' Patent is In a cooling device for exhaust valvesof high power explosion engines the combination of a jacketed engine, an'exhaust valve chamber, a conduit arranged 'op osite the exhaust valve chamber, and a apted to establish communication between the said chamber and the jacket of the engine in which the cooling water circulates, a screw threaded needle-pointed rod screwed into the outer wall of the jacket, and located in the orifice of the said conduit, and a head fitted on the outer end of the said screw 

